feat(reset): кнопка сброса настроек в LuCI и дефолтное состояние при чистой установке

- новый модуль service/reset.uc (режим reset-settings, флаг no-start): остановка сервиса, чистка runtime/кэшей, сохранение tailscale, запись дефолтного конфига

tachyon/Makefile

@@ -148,6 +148,9 @@ define Package/tachyon/install
 	$(INSTALL_DIR) $(1)/usr/lib/tachyon
 	$(CP) ./files/usr/lib/. $(1)/usr/lib/tachyon/
 
+	$(INSTALL_DIR) $(1)/usr/lib/tachyon/defaults
+	$(INSTALL_CONF) ./files/etc/config/tachyon $(1)/usr/lib/tachyon/defaults/config
+
 	$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
 	$(INSTALL_BIN) ./files/etc/hotplug.d/iface/99-tachyon-wan-monitor $(1)/etc/hotplug.d/iface/99-tachyon-wan-monitor
 

tachyon/files/usr/bin/tachyon

@@ -51,6 +51,7 @@ function restore_dnsmasq_failsafe_on_loader_failure(command) {
     command = as_string(command);
     if (command == "start" || command == "stop" || command == "restart" ||
         command == "reload" || command == "uninstall" ||
+        command == "reset_settings" ||
         command == "dnsmasq_restore" || command == "restore_dnsmasq")
         restore_dnsmasq_failsafe();
 }
@@ -64,6 +65,8 @@ function show_help() {
     print("    restart                 Restart Tachyon service\n");
     print("    enable                  Enable Tachyon autostart\n");
     print("    disable                 Disable Tachyon autostart\n");
+    print("    reset_settings [no-start]\n");
+    print("                            Reset Tachyon settings to factory defaults\n");
     print("    uninstall               Remove Tachyon files installed outside opkg/apk\n");
     print("    main                    Run main Tachyon process\n");
     print("    list_update             Update remote lists\n");
@@ -160,6 +163,7 @@ function command_spec(command) {
         enable: [ "service/lifecycle.uc", "enable", 0 ],
         disable: [ "service/lifecycle.uc", "disable", 0 ],
         uninstall: [ "service/uninstall.uc", "uninstall", 1 ],
+        reset_settings: [ "service/reset.uc", "reset-settings", 1 ],
         dnsmasq_restore: [ "service/lifecycle.uc", "dnsmasq-restore", 0 ],
         restore_dnsmasq: [ "service/lifecycle.uc", "dnsmasq-restore", 0 ],
         main: [ "service/lifecycle.uc", "main", 0 ],

tachyon/files/usr/lib/service/reset.uc

@@ -0,0 +1,143 @@
+#!/usr/bin/env ucode
+
+let fs = require("fs");
+
+function as_string(value) {
+    return value == null ? "" : "" + value;
+}
+
+function env(name, fallback) {
+    let value = getenv(name);
+    return value == null ? as_string(fallback) : as_string(value);
+}
+
+function shell_quote(value) {
+    return "'" + replace(as_string(value), /'/g, "'\\''") + "'";
+}
+
+function command_from_args(args) {
+    let parts = [];
+    for (let arg in args)
+        push(parts, shell_quote(arg));
+    return join(" ", parts);
+}
+
+function normalize_status(status) {
+    status = int(status);
+    if (status == -1)
+        return 255;
+    let signal = status & 127;
+    if (signal != 0)
+        return 128 + signal;
+    return (status >> 8) & 255;
+}
+
+function command_success_from_args(args) {
+    return normalize_status(system(command_from_args(args) + " >/dev/null 2>&1")) == 0;
+}
+
+function log_message(message) {
+    system(command_from_args([ "logger", "-t", CONFIG_NAME, "[info] " + message ]) + " >/dev/null 2>&1");
+}
+
+const CONFIG_NAME = env("TACHYON_CONFIG_NAME", "tachyon");
+const LIB_DIR = env("TACHYON_LIB", "/usr/lib/tachyon");
+const BIN_PATH = env("TACHYON_BIN", "/usr/bin/tachyon");
+const INIT_PATH = env("TACHYON_SERVICE_INIT", "/etc/init.d/" + CONFIG_NAME);
+const CONFIG_PATH = env("TACHYON_CONFIG_PATH", "/etc/config/" + CONFIG_NAME);
+const PERSISTENT_DIR = env("TACHYON_PERSISTENT_DIR", "/etc/" + CONFIG_NAME);
+const RUNTIME_STATE_DIR = env("TACHYON_RUNTIME_STATE_DIR", "/var/run/" + CONFIG_NAME);
+const SING_BOX_TMP_DIR = env("TACHYON_SING_BOX_TMP_DIR", "/tmp/sing-box");
+const SING_BOX_CONFIG_PATH = env("TACHYON_SING_BOX_CONFIG_PATH", "/etc/sing-box/config.json");
+
+const PRESERVED_PERSISTENT_ENTRIES = {
+    tailscale: 1
+};
+
+function default_config_source() {
+    for (let candidate in [
+        "/rom/etc/config/" + CONFIG_NAME,
+        LIB_DIR + "/defaults/" + CONFIG_NAME + ".conf",
+        LIB_DIR + "/defaults/config"
+    ]) {
+        candidate = as_string(candidate);
+        if (fs.stat(candidate) != null)
+            return candidate;
+    }
+    return null;
+}
+
+function remove_persistent_state() {
+    if (fs.stat(PERSISTENT_DIR) == null)
+        return true;
+
+    let entries = fs.lsdir(PERSISTENT_DIR);
+    if (type(entries) != "array")
+        return false;
+
+    for (let entry in entries) {
+        entry = as_string(entry);
+        if (PRESERVED_PERSISTENT_ENTRIES[entry])
+            continue;
+        if (!command_success_from_args([ "rm", "-rf", PERSISTENT_DIR + "/" + entry ]))
+            return false;
+    }
+    return true;
+}
+
+function reset_settings(no_start) {
+    command_success_from_args([ BIN_PATH, "stop" ]);
+    command_success_from_args([ INIT_PATH, "stop" ]);
+
+    command_success_from_args([ "rm", "-rf",
+        RUNTIME_STATE_DIR,
+        SING_BOX_TMP_DIR,
+        SING_BOX_CONFIG_PATH
+    ]);
+    if (!remove_persistent_state()) {
+        log_message("Reset settings failed: unable to clean " + PERSISTENT_DIR);
+        print("{\"success\":false,\"message\":\"unable to clean persistent state\"}\n");
+        return 1;
+    }
+
+    let source = default_config_source();
+    if (source == null) {
+        log_message("Reset settings failed: default config source not found");
+        print("{\"success\":false,\"message\":\"default config source not found\"}\n");
+        return 1;
+    }
+
+    if (!command_success_from_args([ "cp", "-f", source, CONFIG_PATH ])) {
+        log_message("Reset settings failed: unable to write default config");
+        print("{\"success\":false,\"message\":\"unable to write default config\"}\n");
+        return 1;
+    }
+    command_success_from_args([ "chmod", "600", CONFIG_PATH ]);
+
+    log_message("Settings have been reset to defaults");
+    print("{\"success\":true}\n");
+
+    if (no_start == "1")
+        return 0;
+
+    let start_status = command_success_from_args([ INIT_PATH, "start" ]) ? 0 : 1;
+    if (start_status != 0) {
+        log_message("Reset settings: service failed to start after reset");
+        print("{\"success\":true,\"started\":false}\n");
+    }
+    return start_status;
+}
+
+let mode = as_string(ARGV[0]);
+let no_start = "0";
+for (let i = 1; i < length(ARGV); i++) {
+    let arg = as_string(ARGV[i]);
+    if (arg == "no-start" || arg == "--no-start")
+        no_start = "1";
+}
+
+if (mode == "reset-settings")
+    exit(reset_settings(no_start));
+
+warn("Usage: service/reset.uc reset-settings [no-start]\n");
+exit(1);